EP0180458B1 - Kitchen unit cooking stove having internal cooling system - Google Patents

Kitchen unit cooking stove having internal cooling system Download PDF

Info

Publication number
EP0180458B1
EP0180458B1 EP85307826A EP85307826A EP0180458B1 EP 0180458 B1 EP0180458 B1 EP 0180458B1 EP 85307826 A EP85307826 A EP 85307826A EP 85307826 A EP85307826 A EP 85307826A EP 0180458 B1 EP0180458 B1 EP 0180458B1
Authority
EP
European Patent Office
Prior art keywords
chassis
aperture
ventilation duct
internal
cooking stove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85307826A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0180458A3 (en
EP0180458A2 (en
Inventor
Junichi Miyagawa
Tetuo Kamo
Kazuichi Okada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0180458A2 publication Critical patent/EP0180458A2/en
Publication of EP0180458A3 publication Critical patent/EP0180458A3/en
Application granted granted Critical
Publication of EP0180458B1 publication Critical patent/EP0180458B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1263—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements using coil cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/101—Tops, e.g. hot plates; Rings provisions for circulation of air

Definitions

  • the present invention relates to a cooking stove which is removably mountable within an opening cut in a table top board forming part of a kitchen unit, and in particular to a cooking stove of this type which employs high-frequency induction heating.
  • such a cooking stove generally has two or more heater elements, e.g. with each heater element including an induction heating coil.
  • each heater element including an induction heating coil.
  • comparatively complex internal cooling arrangements are necessary in order to remove heat which is dissipated by the heating elements. Since the positions of components of the internal cooling system are fixed, it is difficult to vary the positions of the heater elements, and it is necessary to provide large ventilation apertures in the cooking stove and in the kitchen unit itself, in order to ensure a sufficiently high cooling capacity. In addition, also due to the fact that the positions of the components of the cooling system are fixed, it is difficult to increase the number of heater elements in a simple manner.
  • WO 83/03735 discloses a cooking stove with an apertured chassis supporting a heater element and a fan which drives air through the chassis and through an air inlet/outlet section of the stove.
  • a cooking stove comprising a case having a cooling air inlet/outlet section formed therein, a top plate mounted on an upper part of said case, formed with a flat upper surface for use as a cooking surface, a ventilation duct member mounted within said case and communicating with said cooling air inlet/outlet section and having a ventilation aperture formed through an upper face thereof, and an internal chassis mounted within said case upon said ventilation duct member, said chassis having an aperture communicating with said ventilation aperture, a heater element mounted on an upper side of the chassis below said cooking surface of said top plate, and a cooling fan for drawing a flow of cooling air through said chassis and said chassis aperture and said ventilation duct and through said cooling air inletloutlet section; characterised in that there are at least two said internal chassis mounted within said case upon said ventilation duct member, each said chassis being formed independently of said case and ventilation duct member and having a hollow rectangular configuration with a top, a bottom and two sides and two substantially open opposing ends, and each chassis having a chassis aperture formed in the bottom and
  • the electronic components which drive each of the heater elements can be conveniently mounted in the interior of the corresponding internal chassis, and effectively cooled by the flow of air through the chassis interior.
  • the internal configuration of the cooling stove can be made extremely simple and inexpensive to manufacture.
  • reference numeral 1 denotes a top member of a kitchen unit, having a flat upper surface which can be utilized for example as a drainboard or for cooking operations.
  • This top member of the kitchen unit will be referred to in the following as a table top board.
  • Reference numeral 2 denotes an embodiment of a cooking stove according to the present invention, which is removably fitted into an opening 3 formed in the table top board 1.
  • Numeral 4 denotes a top plate of cooking stove 2, having an upper surface which serves as a cooking surface and which is supported by a frame 5.
  • Reference numeral 6 denotes a back grill which is positioned at the rear of the top plate 4 and which has ventilation air inlet and outlet apertures formed therein as described hereinafter, which are utilized to pass a flow of cooling air through the interior of.cooking stove 2.
  • Numeral 7 denotes a control panel, by which the user can adjust the level of electrical power supplied to each of the heater elements of the stove, and is preferably of touch-switch type.
  • FIG. 2 is a cross-sectional view taken along line A-A' in Figure 1
  • Figure is a cross-sectional view taken along line B-B'
  • Figure 4 is an oblique view of the interior of cooking stove 2.
  • reference numeral 8 denotes the case of cooking stove 2
  • reference numeral 9 denotes a first internal chassis on top of which are mounted heater elements 10 and 11, while a second internal chassis 9', of identical configuration to first internal chassis 9, has heater elements 10' and 11' mounted thereon.
  • heater elements 10 and 11 employ high-frequency induction heating coils.
  • Each of the internal chassis 9 and 9' is formed from sheet material and is shaped to be of hollow rectangular cross-section, leaving two open opposing sides, e.g.
  • Numeral 6 denotes a back grill, through which cooling air passes into and out from the internal cooling system of cooking stove 2.
  • Numeral 14 denotes a ventilation duct member having the shape of an inverted tray which has an open rear side, denoted as 14a, and which is mounted on the upper surface of the base of case 8.
  • Circular apertures 15 and 16 are formed in the top of the ventilation duct member 14, positioned to receive cooling air flows from fans 13 and 13' respectively.
  • Reference numeral 18 denotes a partitioning plate which is disposed at the rear of the case 8, and which serves to ensure that the exhaust air flowing through the ventilation duct member 14 will not be recirculated within the internal chassis 9 and 9', but will flow out through the back grill 6.
  • Reference numerals 19 and 20 denote apertures which are formed in the partitioning plate 18, through which cooling air flows inward.
  • Numerals 21 and 22 denote separation plates which serve to separate the air inlet and air outlet sections of back grill 6.
  • a cooling air inlet/outlet section is thereby constituted by partitioning plate 18 with apertures 19, 20 formed therein, separation plates 21, 22 and the rear side of case 8. All of the air flow which performs cooling of the interior of cooking stove 2 passes inward and outward through this cooling air inlet/outlet section, so that it is unnecessary to form any ventilation apertures in the kitchen unit containing cooking stove 2 for cooling purposes, or any additional ventilation apertures in case 8.
  • Figure 6 shows the interior of internal chassis 9 in greater detail, with the interior of internal chassis 9' being of course identical thereto.
  • numeral 23 denotes a heat dissipating power transistor, forming part of an electronic circuit which drives high-frequency induction heating elements 10 and 11.
  • Reference numeral 24 denotes a circuit board on which are mounted other electronic components to control operation of the heater elements 9, 11.
  • cooling air will flow through both of the side openings 9a, 9b into the interior of the chassis. After cooling the power transistor 23 and circuit board 24 this air flows out through the lower aperture 12.
  • cooling fans 13 and 13' of internal chassis 9 and 9' When electrical power is supplied to any of the heater elements 10, 11, 10', 11' of the cooking stove 2, one or both of cooling fans 13 and 13' of internal chassis 9 and 9' will be set in operation. Cooling air will thereby flow through ventilation paths which include the interiors of internal chassis 9 and 9', i.e. air from the external atmosphere will be drawn into the inlet apertures 19 and 20 formed in partitioning plate 18, from the inlet sections of back grill 6, will then flow through the side apertures 9a, 9b, 9a', 9b' of internal chassis 9 and 9', and then through the lower apertures 12, 12' in these chassis past cooling fans 13,13'.
  • each of the internal chassis 9, 9' has a "tunnel" configuration, i.e. is of hollow shape with a rectangular cross-section and openings at side faces thereof, the flow of ventilating air will be concentrated upon specific components which must be effectively cooled. Cooling of the internal components within the chassis 9 and 9' is thereby executed in a highly efficient manner.
  • the internal chassis 9 and 9' of the described embodiment each are provided with two heater ei.ements- . which differ in size, i.e. a small heater element 10 (10') and a large heater element 11 (1T), with the large and small heater elements being positioned in an angularly opposing relationship as shown in Figure 4.
  • a small heater element 10 (10')
  • a large heater element 11 (1T)
  • Such an arrangement serves to facilitate the positioning of cooking pans upon the top plate, and can be easily implemented with the described embodiment.
  • a partitioning plate 27 is mounted in the interior of the ventilation duct, in order to separate the ventilation air flows of the first internal chassis 9 and the second internal chassis 9'. In this way, in the event that only one of the cooling fans is set in operation, a "short-circuit" air flow bypass effect will be prevented. If partitioning plate 27 were not incorporated, a condition could occur in which air is continuously recirculated within the interior of the cooking stove as illustrated in Figure 8, thereby causing a rise in the internal temperature of the cooking stove. The partitioning plate 27 thus serves to enhance the effectiveness of the ventilation system.
  • a cooking stove according to the present invention As described in the above, with a configuration for a cooking stove according to the present invention, it is unnecessary to provide ventilation apertures in the exterior walls of the case of the cooking stove or in the kitchen unit within which the cooking stove is fitted.
  • a plurality of heater elements can be easily provided wthin the cooking stove. Due to the use of separate internal chassis, each provided with an independent cooling fan and ventilation path, it is not necessary for any special consideration to be given to cooling of the cooking stove, when the stove is to be installed within a kitchen unit.
  • the design of a cooking stove according to the present invention is such that the number of heater. elements can be easily increased.
  • assembly at the time of manufacture and changeover of units during servicing can be very easily carried out.
  • the present invention enables an extremely simple and low- cost cooking stove to be manufactured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)
  • Baking, Grill, Roasting (AREA)
  • Induction Heating Cooking Devices (AREA)
EP85307826A 1984-10-29 1985-10-29 Kitchen unit cooking stove having internal cooling system Expired EP0180458B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP227101/84 1984-10-29
JP59227101A JPS61105036A (ja) 1984-10-29 1984-10-29 調理器ユニツト

Publications (3)

Publication Number Publication Date
EP0180458A2 EP0180458A2 (en) 1986-05-07
EP0180458A3 EP0180458A3 (en) 1987-08-19
EP0180458B1 true EP0180458B1 (en) 1990-01-03

Family

ID=16855497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85307826A Expired EP0180458B1 (en) 1984-10-29 1985-10-29 Kitchen unit cooking stove having internal cooling system

Country Status (5)

Country Link
US (1) US4665893A (enrdf_load_stackoverflow)
EP (1) EP0180458B1 (enrdf_load_stackoverflow)
JP (1) JPS61105036A (enrdf_load_stackoverflow)
CA (1) CA1241072A (enrdf_load_stackoverflow)
DE (1) DE3575196D1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8402962B2 (en) * 2003-12-29 2013-03-26 Lg Electronics Inc. Apparatus for supply mixed gas for gas burners of radiant heating type
US9121615B2 (en) 2003-12-19 2015-09-01 Miele & Cie. Kg. Cooking surface for installation into the working surface of a kitchen console

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JPS63148595A (ja) * 1986-12-11 1988-06-21 松下電器産業株式会社 加熱調理装置
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US8872077B2 (en) * 2005-08-01 2014-10-28 Western Industries, Inc. Low profile induction cook top with heat management system
US7687748B2 (en) * 2005-08-01 2010-03-30 Western Industries, Inc. Induction cook top system with integrated ventilator
US8884197B2 (en) * 2007-02-03 2014-11-11 Western Industries, Inc. Induction cook top with heat management system
KR100705260B1 (ko) * 2005-12-08 2007-04-09 엘지전자 주식회사 전기조리기
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RU2415346C1 (ru) * 2006-12-29 2011-03-27 ЭлДжи ЭЛЕКТРОНИКС ИНК. Встроенная бытовая электроплита
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EP2102554B1 (en) * 2007-01-08 2018-01-03 LG Electronics Inc. Built-in cooking appliance
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EP2194328B1 (en) * 2008-12-05 2020-04-01 LG Electronics Inc. Built-in type cooker
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CN102252356B (zh) * 2010-05-18 2014-12-24 张华� 电炉底盘以及电磁炉
JP5525948B2 (ja) * 2010-07-15 2014-06-18 株式会社東芝 Ｉｈビルトインクッキングヒータ
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US10359200B2 (en) * 2015-01-23 2019-07-23 Bsh Home Appliances Corporation Home appliance having a flue gas air diverter
CN105042648A (zh) * 2015-09-02 2015-11-11 江门市赛赑厨房设备有限公司 一种智能散热电磁炉及其使用方法
EP3396255B1 (en) 2017-04-26 2023-06-07 Electrolux Appliances Aktiebolag Induction cooking hob with integrated down-draft hood
US10993292B2 (en) * 2017-10-23 2021-04-27 Whirlpool Corporation System and method for tuning an induction circuit
WO2019081274A1 (de) * 2017-10-26 2019-05-02 BSH Hausgeräte GmbH Kombinationsgerät mit dunstabzugsvorrichtung und kochfeld
WO2019081264A1 (de) * 2017-10-26 2019-05-02 BSH Hausgeräte GmbH Kombinationsgerät mit dunstabzugsvorrichtung und kochfeld
EP3701193B1 (de) * 2017-10-26 2024-07-24 BSH Hausgeräte GmbH Kombinationsgerät mit dunstabzugsvorrichtung und kochfeld
DE112018004982A5 (de) * 2017-10-26 2020-06-25 BSH Hausgeräte GmbH Kombinationsgerät mit Dunstabzugsvorrichtung und Kochfeld
CN109058169B (zh) * 2018-10-16 2024-02-20 宜宾五粮液股份有限公司 冷风接入装置
ES2754804A1 (es) * 2018-10-17 2020-04-20 Bsh Electrodomesticos Espana Sa Dispositivo de campo de coccion
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EP4106492B1 (en) * 2021-06-15 2024-04-10 Electrolux Appliances Aktiebolag Cooking hob, in particular induction cooking hob, including a housing
EP4106493B1 (en) * 2021-06-15 2024-09-25 Electrolux Appliances Aktiebolag Cooking hob with housing

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9121615B2 (en) 2003-12-19 2015-09-01 Miele & Cie. Kg. Cooking surface for installation into the working surface of a kitchen console
US8402962B2 (en) * 2003-12-29 2013-03-26 Lg Electronics Inc. Apparatus for supply mixed gas for gas burners of radiant heating type

Also Published As

Publication number Publication date
JPH036423B2 (enrdf_load_stackoverflow) 1991-01-30
EP0180458A3 (en) 1987-08-19
US4665893A (en) 1987-05-19
EP0180458A2 (en) 1986-05-07
DE3575196D1 (de) 1990-02-08
CA1241072A (en) 1988-08-23
JPS61105036A (ja) 1986-05-23

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